Resilient wheel of motor-cars and other suitable road-vehicles.



No. 894,453. PATENTED JULY 28, 1908.

T. OLD'PIELD & J. A. SOHOPIELD. RESILIENT WHEEL'OF MOTOR CARS AND OTHER SUITABLE 'ROAD 'VEHIGYLESI u APPLICATION TILED MA R'. 11, 1907.

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RESILIENT WHEEL OF MOTOR CARS AND OTHER SUITABLE ROAD VEHICLES.

APPLIOATION FILED MAR.11, 1907.

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RESILIENT WHEEL OF MOTOR CARS AND OTHER SUITABLE ROAD VEHICLES.

APPLIGATION FILED MAR. 11, 1907.

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Fish? PE KB UNITED STATES PATENT OFFICE.

TOM OLDFIELD AND JOSEPH A. SCHOFIELD, OF HALIFAX, EN GLAND.

RESILIENT WHEEL OF MOTOR- CARS AND OTHER SUITABLE ROAD-VEHICLES.

I Specification of Letters Patent. Application filed March 11, 1907; Serial No. 361,805.

Patented July 28,1908.

new and useful Im rovements in Resilient ars and other Suitable- Wheels-of Motor- Road-Vehicles, of which the following is a specification.

This invention relates to the construction of resilient wheels of motor cars and other suitable road vehicles, and our object is to construct said wheels in such a manner that their resihency and surface contact at any:

point where resistance is ofiered to the tire, are equal to those of wheels possessing pneumatic tires, but with the further advantage that the resiliency of our-improved wheel is in no way affected by a puncture of the tire. According to ourinvention we construct the wheel, in two parts, consisting of the hub and rim with their connections, and a ring- The rim has a number of radial rojections of particular design upon its perip ery and a flange upon one side. The ring is bolted to the' other side of rim forming a channel Within which fits the rubber tire; this ring is removed to remove or re lace the tire. We also form the tire of so (1 rubber with depending projections corresponding'in numer and more or less in shape, with the spaces between the radial projections aforesaid. The spaces between the projections on the tire are dee er than the pro'ections in the channel, an so leave a suitable chamber at the top of each projection. These chambers" increase the elasticity of the tire at the point of contact, and said tire in cushioning more or less against the heads of the projections,

also increases the surface contact of the tire and its gripping action upon the road.

Suitable provision is made in the construction of the tire to revent chafing or friction against the sides of said channel. We attain these objects by the mechanism illustrated in the accompanying drawings, in w'hich Figure 1 is a side elevation of our improved resilient wheel with fixing ring or loose flange removed, showing the construction of tire as applied to the back or driving wheels of motor or other suitable road vehicles, and the method of fitting the same to the'rim or felly. Fig. 2 is a similar view to Fig. 1, showing a modified construction of tire and method of fitting the same upon the rim of the front able road vehicles.

or non-driven wheels of motor or other-suit Flg. 3 1s a sectional vlew Fig; 4 1s a transverse section o ng of Fig. 1. 'ig. 5 is a transverse section of the rim portion of our'improved wheel. Fig. 6 is a transverse section of Fig. 2.

Similar letters ofreference refer to similar parts throughout the several views.

In constructing our resilient wheel we preferably form the same in two parts, one part A consists of the hub and rim with their connections, and the other part B of a ring, whichis secured to the rim portion by bolts 0. Upon the periphery D of the rim we form suitable radial projections E having lugs or wings F at each side in order to give a dovetail orinverted T shape to the intervenlng spaces G. The rim has a vertical flange H at oneside, which with the ring B, secured in position, formsa channel between-the two for receiving the tire. We also form the rubber tire J with radial projections'K dependingfrom its inner surface, corresponding in numberand more or less in shape with the s aces G at the bottom of the channeled rim. he spaces L between the projections K are deeper than the said projections E: and of' sue a shape, that cushioning chambers M are formed at the endof each projection E.

The projections E may be hollow or solid as desired, they In order that there may be no chafing of the sides of the tire against the;

also form a bed or seatingfor.

the ring B, and the bolts pass through same.

when securing the latter to the rimfportioli.

riction'br sides of the channel and a free radial comj pression and expansion of the tire obtained at any point of contact no matter what loadmay be put upon the wheel, we make the said tire narrower than the channel, and in addition hollow out or cut away a ortion N upon each'side of the projections ,see Figs. 4 and 6. The spaces or clearances betwee tire and flange providefor any ordinary com pres'sion consequent upon the load upon th wheel, and allow an easy radial movement 0 the tire within the rim. Projecting ribs P upon both'ring B and flange H secure the tige against any lateral shifting. j"

The size and shape of the cushioning champ bers M shown at Fig. 1 vary from those shown at Fig. 2, the former being formed for use upon the back or driving wheel where the tire is subject to considerable circumferential friction and strain when taking the drive or vdurin movement of the vehicle, conseu by the load upon the Wheel to overcome, t erefore a less grip Will serve, and in lessening the grip of the projections E upon the tire, We increase the size of the cushioning chambers and in a corresponding manner the elasticity of the tire.

The tire is mounted upon the rim from the side in a normal condition, the projections E on the rim fitting Within the recesses L in the tire, and the projections K on the tire fitting Within the dovetail spaces Gin the rim. The ring B is then applied, the bolts being preferably passed through the rim and ring from the outside and secured by nuts R, WhlCll are preferably locked by cotters S or the like.

The size or shape and number of the pro- In the case of the tire of the front or non-driven Wheel see Fig. 2, there is only the friction set jections and intervening spaces upon both tire and rim may be varied as desired.

What We claim as our invention, and dcsire to secure by Letters Patent, is

In a Wheel, the combination, With a channel-shaped rim provided With projections on its bottom, of an annular tire of elastic material provided with slots Which engage with the said projections, said slots being of greater depth than the said projections and forming air chambers above the tops of the said projections and extending the full width of the said tire.

In testimony whereof We have signed our names to this specification in the presence of two subscribing Witnesses.

'. TOM OLDFIELD.

J. A. SCHOFIELD. Witnesses ABM. REED,

E. OLDFIELD. 

